Moistening device



F P. REED.

MOISTENING DEVICE.

-APPLICATION msn FEB.7.1921.

17,482,780. y Patented 00.1;.11'1922 334 J/ PMM @fw 7- www 20 color.

l.Patented Oct. 17, 1922.

y "i iran sra riteniamo rasoninnnn .or ensei oni-nnenivnw Assrenon BY Mesure AssIGNii/rnnrsro CHARLES ofone'o'rr.

vnoisrenme 'lne-eran 4'Application filled February ting at East Grange, inthe ycounty .oi Essex,

15 .State of :New 1J ersey, have invented certain k:new and useful Improvementsin Moistening Devices; zand l do .hereby declare :the :following to be :1a l-ull, clear, fand Aexact description of fthe 1inventi'on,:such as will enable others `l skilled Ain the art towhich itappentains `to make-land :use the same.

lly :invention is an l'improvement in :mafchines fior `coating .paper andthe like, of :the @haracter :shown 7and `described -in `fmy `copending application Serial No. 2451,102, led

J une 21,1918, JandsPatent No. 1,394,444, and relates -sespecially to devices for meisten-ing the pa-per `prior sto `the application ot the color, to preparethe paper for receiving the An 'object .ett the invention is to provide Vmeans in connection with la device ot ythe `character specified, for applying alilm ci' moisture, :as yfor instance water yor liquid l color-,to @one facefef the paper, and uniform throughout the tentent of '-fthe said Statie, controlled by therelative movement of `the `afpplyin-g means and the vpaper, wherein-the quantity o-t the moisture applied may -be 4e30 varied at will.

Another obj ect is to provide in afdev-icf'e of "Jthfegoharacter yspeciiied, a moisteni-mg lmeans 2in "the-form of a wiper 'of absorbent -materiah `tteding `from va closed constant level V3.5reservoiig hav-ing means .inaconnection therewith tor admitting 1a regulated quantity of air, whereby to control' the Vpressure` on the liquid in the reservoir and the -Eeed -thron'gh the wiper. 1 n f' In the draw-ings;` Y 4 Figure l is a longitudinal section of' fa ipart kof a paper coating machine provided with `the Iimproved meister-ling device,v l Figure 2 .is a rear view 4of the linoistening e5 device,with a part'insection,r

Figure 3 is .a Iplan view of a, part of the "reservoir, l'

Figures aan-d5 are sections en the llines 4 4: and 5-"5 respectively, of Figure 3.

ln the machines for-ming the subject-matvter foi' the above applications,moisturaas for instance water, isapplied Lto one aceuof the paper, sheet or web, means of afroller which dips into the moistening liquid, and

the meister@ is distributed mainly over 7,019.21.' seifiaino. 443,007.

the 'sheet, `by *means of rubbers and squeefigeea :lin :the present 4invention the moisture is applied and simultaneously distributed uniformly over the face of "the :paper by a .single -`lele-ment controlled by the relative` movement of #the 'applying means and the paper.

' The-:gpres'ent embodimentof the invent-ion is shown inconnection with a paper coating ".maehine (comprising a suitable supporting Ytrarne :1, -upon which is jou-rnaled a reel 2 fearrying the web 3 of paper which is to be vcoated. The paper passes from the -reel over suitable tension rollers 4 and 5, to a drum 6 over which the web passes to the means for spattering orstriping the paper with color.

.ln'the present instance,ispattering means is fsliown, each ofthe said means consisting of v:a tank 7 supported by the trame, and a lroller 8 isnmounted to rotate in the tank, Vdipping `into the color held by the tank.

Aboveand-slightly in front of each roller is a sha-ft 9` mounted'to frotate counter to the roller, and Vcarrying series of bristles 10 eX- tending longitudinally of the sha-ft. These bristles contact with thesmooth top iace"of the roller and l-lfick oii' little specks of liquid color delivering th'em upon the traveling sheet or web. Before the :paper is spattered V-or striped with the color, it is necessary that the ftace which is :to be s'p'attcred or striped H:he provided with a-ilrn of moisture and that Ythe vvfilm be uniformly distributed throughoutwthe extent-of the paper. In the prior applications above mentioned, `this distribution was -as 4before stated obtained by ruby.bigngand squeegeein'g. In the present invention, the depositing of the ilm and the distribution of the same, is obtained by means of a wiper 1l of elt or-like porous absorbent material Thesaid'wiper is supported-by a .reservoir 12 ot. cylindrical form, which is supported foy the frame transversely of the traveling sheet of paper, and i-n front of the lirst spattering -or striping device. This reservoir has hollow ournal pins 13, which are `joi-irnaledin brackets 14 extending up- ;wardly frein the frame, andone of the pins has a handle tor crank 1 5, for convenience in turning th'ejcyl-inder. The other journal pin `is an 4inletd'or the moistening liquid, which vmay be' water, or a suitable liquid color,

where itis desire'dto coat the paper with a `background or body color before spattering or stniping-- The Wipeljlfl is held in a slot 16 extending longitudinally of the reservoir, and it is clamped in the slot bymeans of a fixed clamping plate 17, and a movable plate 18. rIhe plate 17 is held to the reservoir at one side ol' the slot by meansof screws V19, and the platel8 lis held to the reservoir at the other' side of the slot by means of screws 20. The screws 20 engage notches 21 in that side edge of the plate remote from the slot, and it will be obvious thatby loosening the screws the plate may be moved-toward and from the plate 17, to clamp or release the wiper.

That journal pin of the reservoir which is remote from the crank or handle has connected therewith a flexible pipe or hose 22, by means of a. clamping band or collar 23. The other end of the pipe 22 is connected with the discharge nipple `24: of a tank 25, by means of a band 26 similar to the band 23 beforementioned. Thedischarge nipple 24: is controlled by means of avalve 27, so that the supply of moisture to the reservoir may be cut off when desired. The reservoir is a constant level reservoir, being continuously supplied with moisture from the tank, and having a discharge nipple 28 which is of the same capacity as the inlet pipe 122. 'Ihat is the flow through the discharge nipple 28 is the same as the flow from the tank to the reservoir, so that a constant level is maintained in the reservoir. A pipe 29is connected with the discharge nipple 28, land the discharge end of this -pipe 29 has a water seal 30 for preventing the entrance of air to the reservoir.

INhen the device is operating,`the water vflowing,through the wiper creates a degree of suction in the reservoir, Vwhich is fluid tight. As above stated, the vdischarge or overflow nipple 28 is vof a capacity equal to that of the inlet pipe, so that the liquid in the reservoir cannot rise above'a predeter mined level, that is the level of the overflow.

It can however, fall below such level, when there is a fiow through the wiper. The inflow into the reservoir is however, regulated in accordance with the demandsu'pon the reservoir by the wiper. Since the overflow is trapped, and no air can enter through vthe supply pipe, any variation inthe level oftheliquid will vary the pressure in the air chamber or `air space above the liquid. The air which gains admission to the reservoir through the wiper is limited, and not suficient to permit the desired feed. In order to admit a regulated quantity of air Vto the reservoir, whereby to control the flow of the moistening liquid through the wiper, I provide a series of openings 31`in that surface of the reservoir which is uppermost when the reservoirl is in normal position, and I provide means for regulating the capacity of these openings, whereby to `vary the amount of air admitted to the reservoir. The

' said space.

yentirely out ot' register. The slide moves between undercut guides '37 extending longitudinally of vthe reservoir wall, and it has a handle 36 for convenience in manipulating the saine. A drip pan 38is arranged in front of the reservoir and below the same, and when the device is not in use, the reservoir may be rotated to bringithe free edge 'of the wiper'over the drip pan. l i j l The hollow journal pins have threaded engagement with'the ends or'heads of the reservoir as shown in Figure 4: and the outer end `of that pin which engages the hose 22 is lpreferably threaded or corrugated toprevent displacement of the-hoseg- Theend of the discharge nipple 240i the tank is similarly threaded or corrugated, for a lilrepurpose.

` It will be obvious that many differentes methods might be utilized for admitting a regulated quantity of air to the reservoir, in

orderto control the How of the moistening liquid through the wiper. *Astor instance the tanlr25 might be a closed tank', andthe v100 f air admitting valves might be arranged in the tank. `With this construction the fiow of moistening liquid into the reservoir, and the consequent pressuretherein would control the flow through the wiper. I claim. j

1. In a machine oit' the character specified,

`a closed reservoir, a wiper through which the reservoir feeds, means `for continuouslyk feeding liquid thereto, said reservoir having a trapped overflow for maintaining a constant level ofV liquid in the reservoir and an air space above the liquid, "and means for regulating the admission of air tothe said space whereby to regulate 4the feed through 115 the wiper.

'2. In ,a machine of the character specified, a wiper Vof absorbent material for engaging the paper to deposit a lm'of moisture thereon, means for supplying to the wiper a regulated and uniform amount of moistening liquid, said means comprising a closed reservoir with which the wiper communicates, means Jfor feeding-liquid to thereservoir, means forpreventing the rise of the A .liquid in the reservoir aboveV a predetermined height, whereby to maintain an air space above thel liquid, and means Jfor admitting a regulated quantity of air to the the paper, a closed reservoir with which the Wiper communicates, means .for 4maintaining a constant head oi' liquid in the reservoir and an air space above the liquid, and means for admitting a regulated quantity of air to the air space, whereby to control the ilovv of liquid through the wiper.

4. In a machine oil the character specifiec, a Wiper of absorbent material for engaging the paper to deposit a film oic moisture thereon, means Jfor applying to the wiper a regulated and uniform amount of moistening liquid, said means comprising a closed reservoir With Which the Wiper communicates, means for supplying a regulated quantity of liquid to the reservoir, means for limiting `the rise of the liquid in the reservoir to pro# liquid, saidv means comprising a closed reservoir with which the Wiper communicates, means for supplying a regulated quantity of liquid to the reservoir, means for limitingv therise of the liquid in the reservoir to maintain an air space above the liquid.`

means for admitting a regulated quantity of air to the said space, the said means comprising a Series of' openings in the reservoir, and a slide movable on the reservoir over the openings, and having` openings adapted to register With those of the reservoir.

6. In a machine of the character speciiied, a Wiper of absorbent material for engaging the paper to deposit a film of moisture thereon, means for applying to the Wiper a regulated and uniform amount of moistening liquid, saidmeans comprising a closed reservoir with which the Wiper communicates, means for supplying a regulated quantity of liquid to the reservoir, means for limiting the rise of the liquid in the reservoir to provide an air space above the said liquid, and means for admitting a regulated quantity of air to the said space, the reservoir being mounted to rotate on a horizontal axis to bring the Wiper into and out of operative position.

7. In a machine of the character specified, a Wiper of absorbentl material for engaging the paper, a closed reservoir With which the Wiper communicates, means for maintaining a constant head of liquid in the reservoir, means for admitting a regulated quantity of air to the reservoir, whereby to control the 'flow of liquid through the Wiper, the means for maintaining a constant level in the reservoir `comprising a supply tanlr feeding thereto, the reservoir having an overflow of equal capacity to the inflow from the tank, and said overilow having a Waterseal. y

In testimony whereof I aihx my signature.

iinnnnaio Parson REED. i 

